High Energy Physics

Foreword.

Conference Organization.

Highlights on recent experimental results on rare decays from asymmetric B-factories are reported. Also, the results on time-dependent CP violation measurements for decay modes where penguin diagram dominate from Belle are reported.

This paper , 40 years after the discovery of CP violation ¹ in neutral kaon decay in the famous experiment of Brookhaven, presents the most recent results on the CP violation in the b sector as come out of the experiments BABAR and BELLE that are taking data since 1999 at PEPII and KEKB e⁺e^- asymmetric BFactories operating at the center of mass energy corresponding to the mass of the ϒ_4s. After their initial discovery of the CP violation and the measurement of sin2β in 2001 ², now is the time of the observation of direct CP violation by BABAR , confirmed by BELLE , the initial measurements of α, the first clue of γ and the very intriguing results about the measurements of sin2β in the time dependent analysis of decay channels via penguin loops, where and .

Recent progress in the theory of B-meson decays is reviewed with emphasis on the aspects related to the B-fractory data.

We review the experimental status and the perspective of the rare kaon decays, in connection with CP and CPT studies. Special emphasis have been given to the decays that constrain the unitarity triangles and that can be effective probes for new physics. A new bound on TCP conservation from rare kaon decay is reported. A discussion of the V_us measurement from kaon decay is also given.

The status of CP violation and the CKM matrix is reviewed. Direct CP violation in B decay has been established and the measurement of sin 2β in ψK modes reached 5% accuracy. I discuss the implications of these, and of the possible deviations of the CP asymmetries in b → s modes from that in ψK. The first meaningful measurements of α and γ are explained, together with their significance for constraining both the SM and new physics in mixing. I also discuss implications of recent developments in the theory of nonleptonic decays for B → πK rates and CP asymmetries, and for the polarization in charmless B decays to two vector mesons.

LBNL-55944

The role of charm in testing the Standard Model description of quark mixing and CP violation through measurements of lifetimes, decay constants and semileptonic form factors is reviewed. Together with Lattice QCD, charm has the potential this decade to maximize the sensitivity of the entire flavor physics program to new physics. and pave the way for understanding physics beyond the Standard Model at the LHC in the coming decade. The status of indirect searches for physics beyond the Standard Model through charm mixing, CP-violation and rare decays is also reported.

Recent results from lattice QCD calculations relevant to particle physics phenomenology are reviewed. They include the calculations of strong coupling constant, quark masses, kaon matrix elements, and D and B meson matrix elements. Special emphasis is on the recent progress in the simulations including dynamical quarks.

In this talk, I will review the most important progress in the field of hadron spectroscopy in recent one year, especially on multi-quark candidates, including pentaquarks, X(3872), D_s(2632) and resonant structures near and ωJ/ψ mass thresholds. I will also review the new results on scalar mesons, including σ,K, f₀(980), f₀(1370), f₀(1500) and possible f₀(1790). This talk will also cover some other interesting results from BES and CLEO-c experiments.

States beyond those expected in the simple constituent quark model are now emerging. I focus on the scalar glueball and its mixing with states in the nonet, and also on correlations in Strong QCD that may form diquarks and seed states. Some models of the pentaquark candidate Θ(1540) are critically discussed.

Recent searches for physics beyond the Standard Model at high energy colliders are presented. The main focus is on searches for supersymmetry, extra dimensions and new gauge bosons. In all search analyses the data are found to agree well with the Standard Model background expectation and no evidence for contributions from physics beyond the Standard Model is found. The data are thus used to place limits on new physics scenarios.

The status of the precision test of the ElectroWeak interactions is reviewed in this paper. Special emphasis is put on new results at low Q²: the anomalous magnetic moment of the muon from E821 at Brookhaven and new measurements of sin²θ_eff. The status of the measurements at high Q² is also reviewed, and the internal consistency of the Minimal Standard Model is discussed.

I overview the status of the Electroweak Symmetry Breaking problem, paying special attention to the possible signals of new physics at the Large Hadron Collider (and at a Linear Collider)

Recent developments in particle astrophysics and cosmology are described, with an emphasis on new observations and their impacts on the way we formulate the main open questions in the field.

HERA is the world's only accelerator to study inelastic electron-proton scattering at the energy frontier which uniquely allows the partonic structure of the proton and the theory of strong interactions, QCD, to be deeply explored. A review is given here of recent results from the HERA ep collider experiments H1 and ZEUS and the fixed target eN spin experiment HERMES as was presented to the 32^nd Rochester conference at Beijing in summer 2004. The summary comprises new results on the quark and gluon structure of the proton, on the strong coupling constant α_s, on the production of charm and beauty particles and on hard diffractive scattering. New ideas and developments in HERA physics are presented as are the first measurements with the upgraded polarised ep collider.

The latest results for QCD and Heavy flavor at the Tevatron are summarized. The most recent results on Jet physics are discussed in the light of searching for new physics and to study the contribution of soft interactions to the hard process. The production of c and b-hadrons and the their decay properties can be precisely measured at the Tevatron. Lifetimes, branching fractions and CP asymmetries for several decay modes are discussed. In particular the prospects for B_s mixing at the Tevatron are presented.

The status of current investigation of hot and dense matter at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) is reviewed. Indications for the creation of a dense, strongly interacting system have been seen. Further experimental and theoretical work is needed to convert these indications into quantitative measurements of the properties of the system created.

Quantum Chromodynamics is an established part of the Standard Model and an essential part of the toolkit for searching for new physics at high-energy colliders. I present a status report on the theory of QCD and review some of the important developments in the past year.

Recent results of non-accelerator-based experiments, including those of solar, atmospheric, and reactor neutrinos oscillations, neutrinoless double-beta decays, and neutrino magnetic moments, are reviewed. Future projects and their respective prospects are summarized.

Nonzero neutrino masses are the first definitive need to extend the standard model. After reviewing the basic framework, I describe the status of some of the major issues, including tests of the basic framework of neutrino masses and mixings; the question of Majorana vs. Dirac; the spectrum, mixings, and number of neutrinos; models, with special emphasis on constraints from typical superstring constructions (which are not consistent with popular bottom-up assumptions); and other implications.

A brief schetch of accelerators for high energy physics in the next ~30 yeras is given from the view point of accelerator technology.

Research and development of detector technology are critical to the future particle physics program. The goals of the International Linear Collider, in particular, require advances that are challenging, despite the progress driven in recent years by the needs of the Large Hadron Collider. The ILC detector goals and challenges are described and the program to address them is summarized.

The International Linear Collider has a rich physics programme, whatever lies beyond the standard model. Accurate measurement of the top quark mass is needed to constrain the model or its extensions. If there is a light Higgs boson the LHC should see it, but the ILC will pin down its characteristics and test them against model predictions. If Supersymmetric particles appear the ILC will measure a complementary set of them to those seen at the LHC, and may allow extrapolation to the Grand Unified scale. And if a strong electroweak sector is indicated the ILC will be sensitive to the presence of new structures in difermion and diboson systems up to higher masses than the direct search range of the LHC. Beyond the LHC and ILC there could be need for a multi TeV lepton collider.

Aspects of ICHEP 2004 are summarized from a theoretical point of view. QCD works, new NNLO calculations are becoming available and new string calculational tools are emerging, but no conclusions can yet be drawn about the discovery of the quark-gluon plasma or pentaquarks. The small upward shift in the experimental value of m_t raises somewhat the central value of the Higgs mass extracted from a global electroweak fit, and the CKM model describes well the data from the B factories. The Super-Kamiokande, KamLAND and K2K experiments have evidence for oscillation dips in their neutrino data. Little Higgs models are interesting alternatives to low-energy supersymmetry for stabilizing the electroweak scale. Convincing experimental evidence for dark matter particles is still lacking. The LHC is on its way, the technology choice clarifies the roadmap for the ILC, and a multi-TeV CLIC would also have rich physics agenda.

The Sudbury Neutrino Observatory Collaboration (SNO) determined the total active (ν_x)⁸B solar neutrino flux to be 5.21±0.27(stat)±0.38(syst) × 10⁶cm^-2s^-1, without assumptions about the energy dependence of the ν^e survival probability. Data from Phase I and II have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n → 3ν, and set limit on the electron antineutrino flux for the sun.

We present an improved measurement of the oscillation based on a 766.3 ton-year exposure of KamLAND to reactor anti-neutrino. The observed energy spectrum disagree with the expected spectrum shape in the absence of neutrino oscillation at 99.9% C.L. The distorted shape strongly indicate neutrino oscillation rather than other disappearance hypotheses. The neutrino oscillation parameters are measured precisely in KamLAND. Geo-neutrino and ⁷Be solar neutrino result will be reported in near future.

Solar neutrino physics enters a stage of precision measurements. In this connection we present a precise analytic description of the neutrino conversion in the context of LMA MSW solution of the solar neutrino problem. Using the adiabatic perturbation theory we derive an analytic formula for the ν_e survival probability which takes into account the non-adiabatic corrections and the regeneration effect inside the Earth. The probability is averaged over the neutrino production region. We find that the non-adiabatic Corrections are of the order 10^-9 - 10^-7. Using the formula for the Earth regeneration effect we discuss features of the zenith angle dependence of the ν_e flux. In particular, we show that effects of small structures at the surface of the Earth can be important.

Neutrino mixing is described by one small (possibly zero) and two large (one possibly maximal) angles. This makes the bimaximal mixing scenario a valid zeroth order scheme. Since however solar neutrino mixing is non-maximal by close to 6σ, deviations from this scheme have to be considered. First we give a useful parameterization of these deviations. Using that the PMNS matrix is given by , where U_lep stems from diagonalizing the charged lepton mass matrix and U_ν, diagonalizes the neutrino mass matrix, we discuss deviations stemming from charged lepton mixing when the matrix U_ν is assumed to be of bimaximal form. We generalize the procedure to a priori non-maximal atmospheric neutrino mixing in U_ν as predicted by the flavor symmetry L_e - L_μ - L_τ.

Using the recent measurement of SNO salt phase experiment, we study how much the solar neutrino flux deficit observed at SNO could be due to ν_e, transition into antineutrino. Our analysis leads to rather optimistic conclusion that the SNO salt phase data may indicate the existence of Majorana magnetic moment. The prospect for the future BOREXINO experiment is also presented.

Atmospheric neutrino data from the first phase of Super-Kamiohnde between April of 1996 and July of 2001 (1489 live days) are presented. The data are well explained by two flavor oscillation between muon and tau neutrinos. Also a dip in the flight length L over neutrino energy E distribution was observed and the distribution constrained ν_μ ↔ ν_τ neutrino oscillation parameters. The three flavor oscillation analysis and the constraint on θ₁₃ is reported. The current status of the second phase of Super-Kamiokande is presented.

We show that atmospheric neutrinos can provide a sensitive and robust probe of CPT violation (CPTV). We perform realistic event-rate calculations and study the variations of the ratio of total muon to antimuon survival rates with L/E and L (L ≡ baseline length, E ≡ neutrino energy) in a detector capable of identifying the muon charge. We demonstrate that measurements of these ratios when coupled with the significant L and E range which characterizes the atmospheric neutrino spectrum provides a method of both detecting the presence of such violations and putting bounds on them which compare very favourably with those possible from a future neutrino factory.

Evidence of muon neutrino oscillation with an accelerator-based experiment is reported. Data corresponding to 8.91 × 10¹⁹ p.o.t.. were used for the analysis. There were 108 events fully contained in the Super-Kamiokande inner detector fiducial area, which were synchronized to the beam-spill timing. In the case of no oscillations, the expected number of events was . Out of the 108 events, we obtained 56 events of single ring μ-like events. The neutrino energy spectrum, reconstructed by assuming two-body kinematics of quasi-elastic interactions, shows a clear oscillation pattern compared with the spectrum at the production observed by the near detectors. These two facts strongly indicate neutrino oscillation with common oscillation parameter regions. A combined oscillation analysis gives Δm² = 1.7 ~ 3.5 × 10^-3eV² at sin²2θ=1.0 at the 90% confidence level, and the null oscillation probability is found to be less than 0.01%.

MINOS is a long baseline neutrino oscillation experiment designed to perform precision measurements of neutrino oscillations using muon neutrinos. The experiment will do this using a new, intense neutrino beam from the Main Injector at Fermilab and two large, magnetized neutrino detectors: a 1kt Near Detector at Fermilab and a 5.4kt Far detector at a distance of 735km in the Soudan Mine, Minnesota. This paper briefly describes the experiment and its physics aims, reviews the current status and presents some preliminary, non-beam, data from the Far Detector.

OPERA is a neutrino oscillation experiment designed to perform a v_τ appearance search at long distance in the future CNGS beam from CERN to Gran Sasso. It is based on the nuclear emulsion technique to distinguish among the neutrino interaction products the track of a τ produced by a v_τ and its decay tracks. The OPERA detector is presently under construction in the Gran Sasso underground laboratory, 730 km from CERN, and will receive its first neutrinos in 2006. The experimental technique is reviewed and the development of the project described. Foreseen performances in measuring v_τ appearance and also in searching for v_e appearance are discussed.

Besides being a fundamental parameter of Nature, the yet undetermined neutrino mixing angle θ₁₃ plays a key role in exploring CP symmetry in the lepton sector. By performing a new generation of disappearance experiments with a baseline between 1 and 2 km using low-energy electron antineutrinos from nuclear reactors, the mixing angle θ₁₃ could be measured to an order of magnitude better than the current limit. The merits and the challanges of this new round of experiments will be presented.

We investigate the possibility to find the leptonic CP-violation by combining the reactor experiment with the superbeam experiment without antineutrino superbeam. We show also how much the sensitivity on CP-violating phase δ is affected by the fact that we have not known the sign of .

The CHORUS detector was exposed to the neutrino beam of the CERN SPS during the years 94-97. About 10⁶ν_μ CC events were collected in the nuclear emulsion target.

With the present performance of emulsion scanning systems, it has become possible to perform large area volume scanning with fully automatic data-acquisition systems. All tracks belonging to an interaction vertex can be recognized and measured precisely by novel pattern recognition programs. This technique has been used for the recognition of events where short-lived particles are produced. In particular, candidates for the decay of a tau-lepton into hadrons have been searched for in the sample of events where no muon is present in the final state. Besides the oscillation analysis charm production with large statistics can also be studied by this technique. We present results on D⁰ production and associated charm production with final statistics.

The TEXONO collaboration focus on the study of low energy reactor neutrino physics. A laboratory was built at a distance of 28 meters from the reactor core of the Kuo-Sheng (KS) Nuclear Power Plant at Taiwan at a depth of 12 m below sea level with about 25 meter-water-equivalent of overburden. The detectors of both the HPGe and CsI (Tl) crystals in the shielding were placed. Main physics are: 1,The search of neutrino magnetic moment at 10-60 kev:2,The measurement of total cross section for reaction and sin²θ_w at 3MeV-10MeV; 3, The ultra low threshold Ge detector HPGe were used for measurement of coherent scattering and dark matter search. The paper described the results of measurement of neutrino magnetic moment; the situation of the measurement of total cross section for reaction and the progress of coherent scattering and dark matter search.

The NEMO-3 detector, which has been operating in the Fréjus Underground Laboratory since February 2003, is devoted to searching for neutrinoless double beta decay (ββ0v). The expected performance of the detector has been successfully achieved. Half-lives of the two neutrinos double beta decay (ββ2v) have been measured for ¹⁰⁰Mo, ⁸²Se, ⁹⁶Zr, ¹¹⁶Cd and ¹⁵⁰Nd. After 265 days of data collection from February 2003 until March 2004, no evidence for neutrinoless double beta decay (ββ0v) was found from ~7 kg of ¹⁰⁰Mo and ~1 kg of ⁸²Se. The corresponding lower limits for the half-lives are 3.5 × 10²³ years at 90% C.L for ¹⁰⁰Mo and 1.9 × 10²³ years for ⁸²Se. Limits for the effective Majorana neutrino mass are <m_v> < 0.7 - 1.2 eV for ¹⁰⁰Mo and <m_v> < 1.3 - 3.2 eV for ⁸²Se. Radon is the dominant background today and a radon trapping factory will be in operation by the end of September 2004. The NEMO-3 expected sensitivity after 5 years of data is 0.2 eV.

XMASS is an underground experiment aimed at searching rare phenomena under an ultra low background environment by using ultra pure liquid xenon in the Kamioka mine, Japan. The main physics targets of XMASS are cold dark matter, neutrinoless double beta decays, and low-energy solar neutrinos. So far, we have done 2 series of test experiments with a prototype liquid xenon detector. In this paper, the current status of the XMASS project, especially the first results from the second test experiment, is reported.

A radiatively-induced neutrino mass matrix with a simple structure is proposed on the basis of an SU(5) SUSY GUT model with R-parity violation. The model has matter fields in addition to the ordinary matter fields and Higgs fields . The R-parity violating terms are given by while the Yukawa interactions are given by . Since the matter fields and are different from each other at the unification scale, the R-parity violation effects at a low energy scale appear only through the mixings. In order to make this R-parity violation effect harmless for proton decay, a discrete symmetry Z₃ and a triplet-doublet splitting mechanism analogous to the Higgs sector are assumed.

A lepton family symmetry may provide an explanation for the existence of maximal and minimal mixing angles present in the best fit neutrino mixing matrix. Most models of family symmetries presented in the literature either cannot be extensions of the Standard Model, or have complicated aspects, such as an extended Higgs sector or explicit symmetry breaking. To find out whether there are any simpler predictive models, I conducted a systematic search to find the minimal extension of the Standard Model that can explain the mixing matrix form. I found that in the minimal extensions that include family symmetries all the mixing matrices are ruled out by experiment. However, Abelian symmetry models that have more Higgs doublets than the Standard Model can ensure that θ₁₃ = 0, but no Abelian symmetry produce maximal atmospheric mixing.

The successes and limitations of theoretical models that have been used in understanding the signals of the quark-gluon plasm formed in nuclear collisions at the Relativistic Heavy Ion Collider (RHIC) are briefly reviewed.

The hadronic final state of central Pb+Pb collisions at 20, 30, 40, 80, and 158 AGeV has been measured by the CERN NA49 collaboration. The mean transverse mass of pions and kaons at midrapidity stays nearly constant in this energy range, whereas at lower energies, at the AGS, a steep increase with beam energy was measured. Compared to p+p collisions as well as to model calculations, anomalies in the energy dependence of pion and kaon production at lower SPS energies are observed. These findings can be explained, assuming that the energy density reached in central A+A collisions at lower SPS energies is sufficient to transform the hot and dense nuclear matter into a deconfined phase.

We discuss hadron production in heavy ion collisions at RHIC. We argue that hadrons at transverse momenta P_T < 5 GeV are formed by recombination of partons from the dense parton phase created in central collisions at RHIC. We provide a theoretical description of the recombination process for P_T > 2 GeV. Below P_T = 2 GeV our results smoothly match a purely statistical description. At high transverse momentum hadron production is well described in the language of perturbative QCD by the fragmentation of partons. We give numerical results for a variety of hadron spectra, ratios and nuclear suppression factors. We also discuss the anisotropic flow υ₂ and give results based on a flow in the parton phase. Our results are consistent with the existence of a parton phase at RHIC hadronizing at a temperature of 175 MeV and a radial flow velocity of 0.55c.

No abstract received.

We present rapidity distributions dN/dy of π^±, K^± and p, in central Au+Au collisions at . The average rapidity loss per participant nucleon is 2.0 ± 0.2 units of rapidity. We have also measured high transverse momentum particles. For central Au + Au collisions, we observe a suppression at both η = 0,2.2, while for peripheral collisions there is no evidence of this suppression. In d + Au, there is an enhancement at midrapidity, but the spectra become suppressed for forward rapidities.

We present a systematic calculation of the coherent multiple parton scattering with several nucleons in lepton-nucleus and hadron-nucleus collisions. We show that in ℓ + A reactions coherence leads to nuclear shadowing in the structure functions and a modification of the QCD sum rules. In p + A reactions we evaluate the nuclear suppression of single and double inclusive hadron production at moderate transverse momenta. We demonstrate that both spectra and dihadron correlations in p + A collisions at RHIC are sensitive measures of such dynamical nuclear attenuation effects.

A status of the ALICE experiment at LHC is introduced. Some details on the advancement of the major ALICE projects, including the detector construction and physics measurement goals of sub-detectors, together with its installation and running programs and the status of control and computing, are presented.

We show that a recently proposed derivation of Bose-Einstein correlations (BEC) by means of thermal Quantum Field Theory, supplemented by operator-field evolution of the Langevin type, allows for a deeper understanding of the possible coherent behaviour of the emitting source and a clear identification of the origin of the observed shape of the 2-particle BEC function C₂(Q).

Selected topics in the recent developments of hot and dense QCD are discussed.

We present production cross section and transverse momentum (p_T) distribution of charm production at RHIC. The charm quark production cross section is higher than NLO pQCD calculations. The p_T distribution is significantly harder than pQCD prediction. The measured charm meson p_T shape coincides with the pQCD calculation for bare charm quarks. Such a coincidence has been observed in charm production at low beam energies, but is more prominent at RHIC. We discuss heavy quark probes of hadronization of the bulk partonic matter created at RHIC.

We summarize the status of electromagnetic probes of strongly interacting matter produced in relativistic heavy-ion collisions at CERN-SPS with respect to indications of chiral symmetry restoration. Explorative results for studying the open charm dynamics at BNL-RHIC are presented.

Experiments measuring lepton pairs have played an important role in the SPS heavy-ion program since its very beginning, in 1986. We start by shortly reviewing the present situation in this field. Then, we describe the NA60 experiment, that has been designed in order to answer specific questions which remained open after the previous SPS experiments. NA60 has taken Indium–Indium data in 2003 and their analysis is presently ongoing. Preliminary results on J/ψ suppression in In-In collisions will be shown, as well as hints of the quality of the results that can be expected for the study of low and intermediate mass dimuons. Prospects for the future will also be shortly discussed.

We investigate the J/ψ elliptical flow in the Pb-Pb collisions at SPS and Au-Au collisions at RHIC. From the comparison with the coalescence model where charm quarks are fully thermalized, our calculated elliptical flow of the primordially produced J/ψ is much smaller. This may be helpful to differentiate the J/ψ production mechanisms and light flavor thermalization in relativistic heavy ion collisions.

Utilizing the generalized factorization of twist-4 processes, we derive the modified heavy quark fragmentation function after considering the gluon radiation induced by multiple scattering in DIS. It is found that the mass effects of heavy quark may reduce the gluon formation time and change the medium size dependence of heavy quark energy loss. The radiative energy loss is also significantly suppressed relative to a light quark due to the dead-cone effect.

I give a brief review about the color glass condensate, which is the universal form of hadrons and nuclei at high energies.

We report the first results from a search for weakly interacting massive particles (WIMPs) in the Cryogenic Dark Matter Search (CDMS) experiment at the Soudan Underground Laboratory. Four Ge and two Si detectors were operated for 52.6 live days, providing 19.4 kg-d of Ge net exposure after cuts for recoil energies between 10-100 keV. A blind analysis was performed using only calibration data to define the energy threshold and selection criteria for nuclear-recoil candidates. These data set the world's lowest exclusion limits on the coherent WIMP-nucleon scalar cross-section for all WIMP masses above 15 GeV/c², ruling out a significant range of neutralino supersymmetric models. The minimum of the limit curve at the 90% C.L. is 4×10^-43 cm² at a WIMP mass of 60 GeV/c².

Alpha Magnetic Spectrometer (AMS-02) is a high energy particle detector to be installed on the International Space Station (ISS) early in 2008. During its three year mission on the Station it will collect high statistics samples of charged particles above 0.5 GV and gamma rays above 1 GeV. These data will be used to search for large anti-matter domains in the Universe and to study properties of the dark matter in our Galaxy. This article reviews the status of the AMS-02 detector construction and performance as well as its physics potential for antimatter and dark matter searches.

The diffuse galactic EGRET gamma ray data show a clear excess for energies above 1 GeV in comparison with the expectations from conventional galactic models. The excess is seen with a similar spectrum in all sky directions, as expected for Dark Matter (DM) annihilation. The energy spectrum of the excess is used to limit the WIMP mass to the 50-100 GeV range, while the sky maps are used to determine the halo structure, which is consistent with a triaxial isothermal halo with additional enhancement of Dark Matter in the disc. The latter is strongly correlated with the ring of stars around our galaxy at a distance of 14 kpc, thought to originate from the tidal disruption of a dwarf galaxy. It is shown that this ring of DM causes the mysterious change of slope in the rotation curve at R = 1.1 · R₀.

The direct detection of annihilation products in cosmic rays offers an alternative way to search for supersymmetric dark matter particles candidates. The study of the spectrum of gamma-rays, antiprotons and positrons in space has already showed some deviation from the expected signals but with weak statistical evidence. We will review the present situation and the achievable limits with the experiment GLAST.

We use exact results in a new approach to quantum gravity to show that the classical conclusion that a massive elementary point particle is a black hole is obviated by quantum loop effects. Further phenomenological implications are discussed.

The theory of inflation will be investigated as well as supersymmetry breaking in the context of supergravity, incorporating the target-space duality and the non-perturbative gaugino condensation in the hidden sector. The inflation and supersymmetry breaking occur at once by the interplay between the dilaton field as inflaton and the condensate gauge-singlet field. The model satisfies the slow-roll condition which solves the η-problem. When the particle rolls down along the minimized trajectry of the potential V(S,Y) at a duality invariant fixed point T = 1, we can obtain the e-fold value ~ 57. And then the cosmological parameters obtained from our model well match with the recent WMAP data combined with other experiments. This observation is suggesting to consider the string-inspired supergravity as the fundamental of the theory of the evolution of the universe as well as the particle theory.

The Gamma-ray Large Area Space Telescope (GLAST) is a space mission that will detect photons from the sky in the energy range between 10 keV and 300 GeV, scheduled for launch by NASA in 2007. Compared to previous missions, GLAST will have greatly improved sensitivity and ability to resolve γ-ray point sources. This report describes the detector design and performance and presents an overview of the physics goals of the GLAST observatory.

Gamma–Ray Burst (GRB) emit intense flashes of γ-rays typically in the 10 keV - 10 MeV energy range and lasting from fraction of seconds to a few hundred seconds. Their "prompt" γ-ray emission is followed for much longer timescales by considerable emission at lower frequencies (X-ray, optical, IR and radio): the GRB afterglow. The detection of GRB optical counterparts has allowed to measure (since 1997) their redshifts, definitely showing that they are cosmological sources. The broad redshift interval (presently extending out to z~4.5) and the huge power emitted in the prompt γ-ray phase, make these sources excellent candidates to probe the distant universe. The continous progress on the determination of the main GRB phenomenological (temporal and spectral) properties is providing new clues on their nature: in particular intrinsic correlations have been recently revealed between the GRB spectral characteristics and their global energetics, which can potentially allow to use GRB as rulers to measure the cosmological parameters. In this presentation a brief review of these correlations and of their cosmological significance is given. It is stressed the relevance both for the GRB understanding and for their cosmological use of assessing the role of any material present in the GRB environment. In fact, the statistical analysis of a large sample (400) of GRB light curves has revealed the presence of late time structures (about 200-300 s after the burst) which might be indeed interpreted as the effect of the interaction of the burst photons with a relatively dense ambient medium.

Precise knowledge of the nuclei component of cosmic rays is needed to describe the cosmic ray production, acceleration and propagation mechanisms in our galaxy. Present measurements suffer from limitations due to short exposure time, intrinsic instrumental limitations and restricted energy range. The AMS-02 experiment is a large acceptance magnetic spectrometer to perform high statistics studies of cosmic rays in space. The detector will operate on the International Space Station for more than three years. AMS-02 will measure precisely the cosmic ray fluxes of individual nuclei and isotopes up to Z=26 in the rigidity range from 1 GV to few TV. Such precise measurements will allow verifying the cosmic-ray propagation model through secondary-to-primary ratios as D/p, He³/He⁴, Be¹⁰/Be⁹, B/C and sub-Fe/Fe. In particular the high accuracy of the Be¹⁰/Be⁹ measurements can improve the understanding of the age of the cosmic-ray confinement and the size of the galactic halo.

The Antarctic Muon And Neutrino Detector Array (AMANDA) is a high-energy neutrino telescope based at the geographic South Pole. The primary goal of this detector is the observation of astronomical sources of high-energy neutrinos. This paper shows the latest results of the search for ν_μs emitted from point sources and ν_μs from dark matter annihilation in the Earth and the Sun.

Antares is a high energy neutrino telescope which is being installed in the Mediterranean off shore of Toulon (France) at 2500 metre depth. The detector design and the expected performances are reported. The results of prototype tests and the development of the construction are described.

Results on TeV γ-ray point source search using data taken from Tibet-HD (Feb.1997-Sep.1999) and Tibet-III (Nov.1999-0ct.2001) are presented. From 0° to 60° in declination, two sources, the well-known steady source Crab Nebula and the high state of the flare type source Markarian 421, are detected by all-sky survey. The large scale anisotropy of cosmic-ray intensity with a magnitude about 0.1% is observed simultaneously. For purpose of cross check, two techniques based on the equi-zenith method are independently developed.

No abstract received.

L3+C is a unique experiment to study cosmic ray muons by using the magnet spectrometer of L3. The precise absolute atmospheric muon spectrum, the ratio of positive to negative muons and their angular dependence have been achieved. The moon shadow of cosmic rays has been observed, and the upper limit of the primary antiproton to proton ratio is derived. Exotic events with a vertex are searched and no one has been found up to now. Among other results to be published soon, results in search for signals from the solar flare, studies on multi-muon events and the primary composition in the knee region are presented.

The anomalous magnetic moment of the muon has been measured to 0.5 ppm in a series of precision experiments at the Brookhaven Alternating Gradient Synchrotron. The individual results for each polarity: a_μ ⁺ = 11 659 204(7)(5)×10^-10 and a_μ ^- = 11 659 214(8)(3) × 10^-10 are consistent with each other, so that we can write the average anomaly as a_μ(exp) = 11 659 208(6) × 10^-10 (0.5 ppm). A discrepancy, Δa_μ, between the measured value a_μ(exp) and the Standard Model a_μ(SM) would be a signal for new physics. Currently the standard model prediction is calculated to 0.6 ppm precision and is dominated by the uncertainty of the hadronic contributions. We expect that the error on a_μ(SM) will be reduced by a factor of two within the next decade, which, when combined with another experimental run at BNL, would put serious constraints on dark matter and supersymmetry.

The NOMAD experiment collected unprecedent neutrino data samples, matching both the large statistics of massive calorimeters and the reconstruction quality of bubble chambers. This paper describes the determination of the weak mixing angle which is ongoing in NOMAD, with a target precision of ~ 1%. In addition, measurements of the ν_μ quasi-elastic cross-section and of neutrino Charged Current differential cross-section on carbon are presented.

Recent results on tau physics from BABAR are reviewed. Limits on lepton-flavor violation in the tau decay process τ^- → ℓ^-ℓ⁺ℓ^- are presented based on 91.6fb^-1 of data. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations, and upper limits on the branching fractions are set in the range (1 - 3) × 10^-7 at 90% CL. A preliminary measurement of the five prong branching fraction based on 110.7fb^-1 of data is presented with the result ℬ(τ^- → 3h^-2h⁺ν_τ) = (8.52 ± 0.09 ± 0.40) × 10^-4. A preliminary measurement of the tau lifetime based on 30fb⁺¹ of data is presented where a lifetime of 290.8 ± 1.5 ± 1.6 fs is measured.

We have compared the virtual corrections to single hard bremsstrahlung as calculated by S. Jadach, M. Melles, B.F.L. Ward and S.A. Yost to several other expressions. The most recent of these comparisons is to the leptonic tensor calculated by J.H. Kühn and G. Rodrigo for radiative return. Agreement is found to within 10^-5 or better, as a fraction of the Born cross section, for most of the range of photon energies. The massless limits have been shown to agree analytically to NLL order.

Heavy flavour electroweak measurements from LEP and SLD are presented with an emphasis on the final results from around the Z⁰ resonance, which in the Standard Model lead to precise determinations of the effective electroweak mixing angle . Preliminary results from the higher centre-of-mass energies explored at LEP2 are also discussed.

In four years of data taking at energies above the W-pair production threshold the four LEP collaborations have collected more than 600 pb^-1 of integrated luminosity each. The collected data allow to test the production mechanisms of four-fermion final states up to percent level and to measure the trilinear gauge couplings with a precision of few percents.

The LEP2 program has allowed for a high precision measurement of the W boson mass. The latest preliminary results, corresponding to the combination for the winter conferences of 2003 [l] are presented here. In addition, the recent progress on the understanding and reduction of the systematic effects due to Bose-Einstein correlations and color reconnection effects is discussed.

Measurements of inclusive W and Z cross sections times leptonic branching ratios for collisions at are reported here on behalf of the CDF and DØ collaborations. The data correspond to an integrated luminosity up to 200 pb^-1. The ratio of leptonic W and Z rates is measured and the leptonic branching fraction B(W → lν) is extracted as well as an indirect value for the total width of the W and the CKM matrix element |V_cs|.

We describe a measurement of the charge asymmetry of electrons from W^± boson decays using events. We also present a measurement of the forward-backward charge asymmetry of electron-positron pairs resulting from the process , from which we extract the Z⁰-quark and Z⁰-electron coupling constants and measure the sensitivity of the CDF experiment to these couplings. These analyses use integrated luminosities of 170 pb^-1 and 72 pb^-1, respectively, of data collected by the CDF Run II detector at the Fermilab Tevatron.

The CDF and DØ experiments at the Tevatron measure the W boson mass and width with high precision. The Run 1 measurements have been combined to yield and . CDF has analyzed 0.2 fb^-l of Run 2 data and determined the uncertainties on the W boson mass measurements in the electron and muon decay channels. Combining the two channels yields a 76 MeV uncertainty, which is lower than the uncertainty on the Run 1 CDF W boson mass measurement.

Preliminary studies of diboson final states at the Tevatron are presented. The higher center of mass energy of 1.96 TeV, and about twice the luminosity of Run I have allowed us greater access to diboson states. The cross-sections for most final states are presented and limits for the few that haven't been measured are given.

Preliminary results of cross section measurements and single top exclusion limits of the Tevatron experiments CDF and D∅ are presented. The different measurements are based on a dataset between 140 and 200 pb^-1 corresponding to a data taking period from spring 2002 to September 2003. The cross section measurements are consistent with each other and the Standard Model prediction. Data and Monte-Carlo prediction are in good agreement in the search for single top quark. Its observation is anticipated with roughly 2 fb^-1 integrated luminosity.

We report on the latest experimental measurements of the top quark mass by the CDF and DØ Collaborations at the Fermilab Tevatron. We present a new top mass measurement using the events collected by the DØ Collaboration in Run I between 1994 and 1996. This result is combined with previous measurements to yield a new world top mass average. We also describe several preliminary results using up to 193 pb^-1 of events produced in collisions at during the Run II of the Tevatron.

We use data collected by the CDF and D0 Collaborations in collisions at to analyze properties of events with top quarks. We present preliminary measurements of the helicity of the W boson in top quark decays, the ratio of branching fractions BR(t → Wb)/BR(t → W_q), and the t → τνb branching ratio where the tau lepton decays semi-leptonically.

Searches for the Standard Model Higgs in W H and H → WW channels by CDF and DØ collaborations are presented. The preliminary results are based on < 180pb^-1 of data analyzed by each experiment. Important backgrounds to Higgs searches, such as heavy flavor production in association with massive vector bosons (W and Z) are studied in the process.

We discuss two aspects of electroweak physics that relate to parton distributions: (i) the calculation of total W and Z cross sections at hadron colliders, and in particular the uncertainties in the theoretical predictions that originate in the parton distribution functions, and (ii) the effect of including O(α) QED corrections to the parton evolution in the global analysis.

The ATLAS and CMS experiments at the LHC have vast potential for electroweak measurements and the 14 TeV center-of-mass energy will in addition allow new regimes of electroweak phenomena to be explored. The extreme brightness (luminosity) of the LHC beam crossings will allow substantial improvements in the measurement of the mass of the top quark and the W boson. A significant improvement in the determination of the coupling in three vector boson vertices will be possible; it will also be possible to make a rough measurement of the Higgs boson couplings once the Higgs is observed. Measurements of the forward-backward asymmetry in Z → ee decays will provide competitive measurements of the Weinberg angle.

Tests of dynamical symmetry breaking will be made from studies of vector boson scattering at high energies; these tests are feasible thanks to the forward jet tagging capabilities of ATLAS and CMS. Electroweak single-top production will allow a new direct measurement of V_tb and of the top polarisation.

The search for the Higgs boson is one of the most important tasks of the two multi-purpose experiments ATLAS and CMS, which will be placed inside the LHC 14 TeV proton-proton collider. The most recent studies, which have been developed with detailed simulations of the detector geometry and response, has pointed out that the LHC detectors have the possibility to cover the whole mass spectrum and detect the Standard Model Higgs boson signal.

Prospects on electroweak physics at a future International Linear Collider (ILC) are summarized, including gauge coupling measurements, top quark physics and Higgs physics.

The cross sections for neutral and charged-current deep inelastic scattering with longitudinally polarised e⁺p collisions were first measured at a luminosity-averaged positive polarisation of about 30% and at a negative polarisation of about -40%. The parity-violating nature of the weak charged-current interaction was clearly observed, which is the first direct measurement at large energies.

Multi-electron and multi-muon production at high transverse momentum is measured in ep scattering at HERA. Previous published analyses are extended, combining new HERA I1 data taken in 2003–2004 with previous HERA I data sample. In addition events with high P_T electrons and muons are investigated here for the first time. Yields of di-lepton and tri-lepton events are measured and a general good agreement is found with the Standard Model prediction, dominated by photon-photon interactions. Events are observed with leptons of high transverse momenta in a domain where the Standard Model prediction is low.

We propose a sensitive way to test the anomalous HVV couplings (V = W^±, Z⁰) of the Higgs boson (H), which can arise from the dimension-6 effective operators in a linearly realized Higgs sector, via studying the VV scattering processes at the CERN LHC. The gold-plated pure leptonic decay modes of the final state weak bosons in the processes pp → VVjj are studied. We show that, with an integrated luminosity of 300 fb^-1 and sufficient kinematical cuts for suppressing the backgrounds, studying the process pp → W⁺W⁺jj → l⁺νl⁺νjj can probe the anomalous HWW couplings at the level of 0.01 - 0.08TeV^-1 for the linearly realized effective Lagrangian.

The NuTeV Collaboration reported a value of sin²θ_w measured in neutrino-nucleon deep inelastic scattering, and found that the value is three standard deviations from the world average value of other electroweak measurements. If this result cannot be explained within conventional physics, it must imply some novel physics beyond the standard model. We report the correction from the asymmetric strange-antistrange sea by using both the light-cone meson-baryon model and the chiral quark model, and show that a significant part of the NuTeV anomaly can be explained by the strange-antistrange asymmetry.

We have measured the cross section σ(e⁺e^- → π⁺π^- γ) at an energy W = m_ϕ = 1.02 GeV with the KLOE detector at the electron-positron collider DAΦNE. From the dependence of the cross section on the invariant mass of the two-pion system, we extract σ(e⁺e^- → π⁺π^-) for the mass range 0.35 < s < 0.95 GeV². From this result, we calculate the hadronic contribution to the muon anomaly a_μ.

The current status of the quantities entering into the global electroweak fits is reviewed, highlighting changes since Summer 2003. These data include the precision electroweak properties of the Z and W bosom, the top-quark mass and the value of the electromagnetic coupling constant α(M_Z), at a scale M_Z. Using these Z and W (high Q²) data, the value of the Higss mass is extracted, within the context of the Standard Model (SM). The consistency of the data, and the overall agreement with the SM, are discussed.

New results of the measurements of the proton structure functions F₂ and F_L at low Q² at HERA are presented. The measurements cover mainly the transition region of Q² ~ 1 GeV² between the domains of deep inelastic scattering and quasi-real photoproduction. For the F₂ measurements radiative events are employed by H1, in order to extend the covered range of Bjorken x towards higher values. The results are used to study the x dependence of F₂(x, Q²) in the non-perturbative regime. Furthermore, the first direct F_L extraction performed by ZEUS using radiative events and a new "shape method" of the F_L extraction with higher precision by H1 are discussed.

Inclusive cross-section measurements of electron-proton and positron proton interactions at high momentum transfer Q² are shown. The data were recorded with the H1 and ZEUS detectors at HERA in the years 1994-2000 (HERA I) and 2003-2004 (HERA II). During the HERA II data-taking period the positron beam was longitudinally polarised.

The H1 and ZEUS Collaborations have performed new next-to-leading order QCD analyses to determine the parton density functions of the proton. QCD fits are performed using inclusive neutral and charged current deep inelastic scattering cross sections from HERA-I. The fits include a full treatment of experimental systematic uncertainies, taking into account point-to-point correlations. The extracted parton densities are in agreement with those from global fits. Since HERA inclusive data provide no direct information on the high-x gluon, an independent fit has been performed by the ZEUS Collaboration in which the inclusive DIS cross sections are supplemented by jet data from deep inelastic scattering and photoproduction. The determination of the gluon distribution is significantly improved in such fits, allowing a competitive extraction of the strong coupling, .

The Adler sum rule for deep inelastic neutrino scattering measures the isospin of the nucleon, and is hence exact. In contrast the Gottfried sum rule for charged lepton scattering does receive perturbative and non-perturbative corrections. We show that at two-loop level the Gottfried sum rule is suppressed by a factor relative to higher moments, and we conjecture that this suppression holds to all-orders, and also for higher-twist effects. It is further noted that the differences between radiative corrections for higher moments of neutrino and charged lepton deep inelastic scattering, are suppressed at two-loops, and this is also conjectured to hold to all-orders. The suppression of perturbative corrections to the Gottfried sum rule makes it plausible that the deviations from the parton model value are dominated by a light quark flavour asymmetry in the nucleon sea. This asymmetry indeed persists as N_c → ∞ as predicted in a chiral-soliton model.

In some processes at the LHC, theoretical precisions of 1% are desired. With an eye toward such precisions, we introduce the theory of the simultaneous YFS resummation of QED and QCD to compute the size of the expected resummed soft radiative threshold effects in precision studies of heavy particle production at the LHC. Our results, that the soft QED threshold effects are at the level of 0.3% whereas the soft QCD threshold effects enter at the level of 2O%, show that both must be controlled to be on the conservative side to achieve such precision goals.

We have computed the complete next-to-next-to-leading order (NNLO) contributions to the splitting functions governing the evolution of unpolarized parton densities in perturbative QCD. Our results agree with all partial results available in the literature. We recall the general structure of the splitting functions and display selected results to show the size of the NNLO corrections and their effect on the evolution.

The concept of parton fragmentation in QCD hard scattering phenomenology as well as NLO pQCD analysis of fragmentation functions are outlined. The importance of semi-inclusive DIS for both fragmentation functions and polarized parton densities is stressed. Hadroproduction of pions of a few GeV p⊥ is discussed in the collision of polarized protons at .

The latest results of deep inelastic scattering (DIS) studies of 160 GeV muons on the deuterated polarized target are reported. They include estimations of virtual photon-deuteron asymmetries, gluon contributions to the nucleon spin and Collins asymmetries in hadron production on the transversely polarized target.

STAR collected data in proton-proton collisions at GeV with transverse and longitudinal beam polarizations during the initial running periods in 2002–2004 at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Results on the single transverse spin asymmetries in the production of high energy forward neutral pions and of forward charged hadrons will be presented. Data have been obtained for double longitudinal asymmetries in inclusive jet production in 2003 and 2004. These data provide sensitivity to the polarization of gluons in the proton. In the future, we aim to determine the gluon polarization over a wide kinematic range using coincidences of direct photons and jets. Furthermore, we aim to determine the polarizations of the u, ū, d and quarks in the proton by measuring single longitudinal spin asymmetries in the production of weak bosons at GeV.

We proposed a picture that relates the transverse hyperon polarization observed in unpolarized hh/hA collisions to the left-right asymmetries observed in singly polarized hh collisions. We present the different ingredients of the picture, some of the main results and discuss the dedicated tests of them.

Resent results on the analysis of the hadronic decays of Z boson and inclusive hadron production in two-photon collisions obtained by the LEP experiments are reported:

Coherent soft hadron production in 3-jet events is compared to the QCD predictions. Depletion of the fragmentation function at small angles in b-jets is observed for the first time. Detailed study of scaling violations in quark and gluon jet fragmentation functions is presented. New data on inclusive particle production at high P_t in γγ collisions at LEP II energies is discussed.

We point out that perturbative evolution in QCD at three loops generates a strange-antistrange asymmetry in the nucleon's sea just from the fact that the nucleon has non-vanishing up and down quark valence densities. The recently computed three-loop splitting functions allow for an estimate of this effect. We find that a fairly sizable asymmetry may be generated.

Measurements of charm production in deep inelastic scattering (DIS) and photoproduction have been carried out by the ZEUS and H1 collaborations at HERA. Protons at 920 GeV are collided with positrons of 27.5 GeV. Results using integrated luminosities up to 120 pb^-1 for HERA I and 35 pb^-1 for HERA II are presented. Single and double differential cross sections are compared to perturbative QCD (pQCD) predictions. Charm DIS cross sections are in reasonable agreement with pQCD calculations. There is evidence that charm fragmentation is universal in e⁺e^- and ep. First results from HERA II data on charm and beauty production are presented.

Recent results on beauty production in electron proton collisions at a center-of-mass energy of 318 GeV at HERA are presented. The data make use of the HERA-I data samples recorded between 1996 and 2000. The cross sections measured by the H1 and ZEUS experiments are compared with perturbative QCD calculations.

Recent CDF and D0 results on charm and beauty production in Run 2 of the Tevatron collider are discussed and compared to theoretical expectations.

HERA-B is a fixed-target muti-particle spectrometer experiment at the 920 GeV HERA proton beam at DESY. The collected data sample from the 2002/2003 HERA run includes 200 million interactions recorded with a minimum bias trigger and about 300,000 J/Ψ decays recorded with a dilepton trigger. These data samples are being analyzed to extract production cross sections for J/Ψ, ϒ, and charmed mesons as well as the total b-quark production cross section. Additionally, aspects of charmonium production including the χ_c to J/Ψ cross section ratio, the Ψ(2S) / J/Ψ cross section ratio, and the .x_F , transverse momentum and atomic number dependence of the J/Ψ cross section in the target hemisphere are under investigation. Preliminary results on these topics are presented.

We report a new analysis of double charmonium production in e⁺e^- annihilation using a data sample collected by the Belle experiment. We confirm our previous observation of the processes e⁺e^- → J/ψη_c(χ_c0, η_c(2S)) and perform an angular analysis for these processes. Processes of the type are observed for the first time. We also observe a new charmonium state – X(3940), produced in the process e⁺e^- → J/ψX(3940).

Results on isolated prompt photon production are presented. The measurements were performed at HERA in deep inelastic ep scattering and photoproduction, as well as at LEP in photon photon collisions. Differential cross sections are shown for inclusive prompt photons and those accompanied by a jet. The results are compared to predictions of perturbative QCD calculations in next to leading order and to predictions of the event generators PYTHIA and HERWIG.

With the reaction e⁺e^- → e⁺e^-γ*γ→ e⁺e^-hadrons, LEP experiments have measured the hadronic photon structure function in a wide Q² and x range. Despite the good statistical precision and the small background contamination, the measurements are affected by uncertainties of the order of 20-30% due to Monte Carlo corrections limited by the poor knowledge of the hadronic shape of two-photon events. A consistent value of α_s is obtained by global fits to all measurements, with a precision similar to other α_s determinations at LEP.

Studies of jet-shape observables in hard processes are summarized together with future developments

The LEP experiments have measured event shapes using data taken at e⁺e^- center-of-mass energies ranging from 91 GeV to 209 GeV. Using the final LEP event shape measurements, a combined value of the strong coupling constant α_s(M_Z) has been extracted. Events with photon radiation have been used to extend the measurements to lower center-of-mass energies to study the running of α_s. Alternative α_s measurements using four-jet rates have also been performed.

Energy flow and jet formation is an interesting phenomena in high energy collisions, and the study of the resultant event shapes provides a powerful tool to extend the study of QCD to the non-perturbative region. Additionally, the jet substructure and multijet cross sections provide methods to study the underlying parton dynamics and to determine the strong coupling constant.

Data from e⁺e^- annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 and 44 GeV were used to study the 4-jet rate using the Durham algorithm as well as the first five moments of event shape observables. The data were compared with NLO QCD predictions, augmented by resummed NLLA calculations for the 4-jet rate, in order to extract values of the strong coupling constant α_S. The preliminary results are α_S(M_Z⁰) = 0.1169 ± 0.0026 (4-jet rate) and α_S(M_Z⁰) = 0.1286 ± 0.0072 (moments) consistent with the world average value. For some of the higher moments systematic deficiencies of the QCD predictions are observed.

Recent results on jets in photoproduction and in deep-inelastic scattering at low Q² by the H1 and ZEUS collaborations are reviewed.

Parton dynamics of the hadronic final state in the kinematic region of small Bjorken-x x_Bj in Deep Inelastic Scattering (DIS) at HERA is expected to be sensitive to different parton evolution models. The differences are expected to be most prominent in the phase space region towards the proton remnant direction. An initial state cascade which is not ordered in parton virtuality is expected to be dominant. Evidence for these effects in QCD are searched for by studying events with a forward jet or π⁰ mesons with the ZEUS and H1 detectors. Measurements of differential cross sections have been compared with the predictions of different Monte Carlo (MC) models generating initial state emissions which are ordered and non-ordered in virtuality.

Preliminary jet measurements are presented from the CDF and DØ experiments at the Tevatron collider operating at a center of mass energy of 1.96 TeV. The increased center of mass energy together with about twice the integrated luminosity allows the inclusive jet cross section measurement to be extended by about 150 GeV. Preliminary measurements of the dijet azimuthal correlation for jets in the central rapidity region and the dijet mass distribution measured by the DØ collaboration are presented. Within the errors, the results are consistent with the predictions of NLO QCD.

No abstract received.

Event-by-event transverse-momentum and charge fluctuations in π ⁺p and K⁺p collisions at 250 GeV/C are reviewed. For the first time, the dependence of these fluctuations on the size of central rapidity and transverse momentum windows are systematically presented. The results are compared with those from heavy ion experiments and PYTHIA. The significant similarities and differences are pointed out.

It is argued that, most likely, the thermalized state can be achieved in the hard processes. The energy correlators vanishing criterion is discussed for this purpose in the large multiplicity domain.

It is pointed out that the powerful statistical methods introduced by Bachelier and Mandelbrot in Economics, and those introduced by Hurst and Feder in Marine Sciences, can be readily used to examine fluctuation phenomena in hadron-production processes. Evidences for the existence of non-Gaussian stable, stationary, scale invariant distributions, fractal dimensions, and the validity of Hurst's empirical law are presented. Since none of the observed features is directly related to the basis of the conventional physical picture, it is not clear whether (and if yes, how and why) these striking empirical regularities can be understood in the framework of the conventional picture including QCD.

New results on baryon production in elementary hadronic interactions measured by the NA49 detector at the CERN SPS, are presented. The distribution of net baryon density in p+p and pi+p collisions is investigated and also compared to gamma+p interactions from HERA. Invoking the non-baryonic nature of pion and gamma projectile, it is demonstrated that net baryon production is described by a factorizing two-component mechanism. The evolution of baryon number transfer is studied in hadron+proton, hadron+A and A+A reactions. A common, smooth description of the baryon stopping process is obtained. An inelasticity scale is proposed for elementary and nuclear reactions, where the inelasticity in elementary interactions is determined by the final state baryon.

The latest results of CMD-2 data analysis have been discussed. Data were collected at e⁺e^- VEPP-2M collider in 0.4-1.4 GeV c.m. energy range. New measurements of pion formfactor, four pions cross sections as well as new ϕ-resonance study in 3π and K⁺K^- modes have been presented.

A study of several 3- and 4-body hadronic final states (π⁺π^-π⁰, π⁺π^-π⁺π^-, K⁺K^-π⁺π^- and K⁺K^-K⁺K^-) accompanied by hard photon is presented. These states are produced from e⁺ e^- collisions at the c.m. energy near ϒ(4S) resonance using 90 fb^-1 data sample collected with the BABAR detector at the PEP-II colider. The invariant mass of the hadronic final state determines the virtual photon energy, so that data can be compared with direct e⁺e^- cross sections. The cross sections for the above final states have been obtained from the threshold to 4.5 GeV with about 5% systematic errors. The accuracy of the results are comparable with the best direct e⁺e^- results overall and with much better precision in 1.4-2.5 GeV region where very few data are available. In addition to light meson spectroscopy these data can be used to improve the determination of R - the ratio of e⁺e^- → hadrons cross section to e⁺e^- → μ⁺μ^- - and thereby to impact the understanding of recent (g - 2)_μ measurement. The ISR technique also gives access to J/ψ production. Measurements of branching ratios into 3- and 4-body final states given above are made to a level of precision that is tipically better than that obtained in the combined earlier measurements.

The evaluation of the hadronic contribution to the muon magnetic anomaly a_μ is reviewed, including a new estimate using precise results on the π⁺π^- spectral function from the KLOE Collaboration. It is found that the KLOE data confirm to some extent the previous e⁺e^- annihilation data in this channel, and accentuate the disagreement with the isospin-breaking-corrected spectral function from τ^- → π^-π⁰ν_τ decays. Correcting for the empirical difference in the mass of the charged and the neutral ρ locally improves, but does not resolve this discrepancy. A preliminary reevaluation (including the KLOE data) of the e⁺e^--based Standard Model prediction of a_μ results in a deviation of 2.7 standard deviations from the BNL measurement.

We discuss hadronic light-by-light scattering contribution to the muon anomalous magnetic moment, a_μ = (g_μ - 2)/2 paying particular attention to the consistent matching between the short- and the long-distance behavior of the light-by-light scattering amplitude. Accounting for the short-distance constraints leads to approximately 50% increase in the central value of , compared to existing estimates.

The effect of colour reconnection is studied in W and Z boson decays by the four LEP experiments. These studies lead to no or very little evidence for colour reconnection effects.

Recent precision measurements of diffractive neutral current deep inelastic ep scattering are performed by the H1 and ZEUS Collaborations at the HERA collider in a wide range of photon virtuality Q². The first measurements of the large rapidity gap cross sections in charged current processes at high Q² are also presented. The results are compared with model predictions based on parton density functions obtained from a DGLAP QCD fit to the data.

Measurements of diffractive charm and jet production at HERA are presented by the ZEUS and H1 collaborations. Cross sections of diffractive D*^± meson production in deep inelastic scattering by H1 are presented. Diffractive dijet production by H1 and ZEUS is presented in the photoproduction and deep inelastic scattering regimes. Differential cross sections are compared with the predictions from leading order Monte Carlo models and next-to-leading order QCD calculations.

Diffractive vector meson photoproduction measurements from H1 and ZEUS are presented in which the magnitude of the four-momentum transfer squared |t| at the proton vertex is large. H1 has also studied the process γp → γY in which the outgoing photon has transverse momentum p_t(γ) > 2 GeV and there is a large rapidity gap between the proton dissociation system Y and the outgoing photon. In both cases, the large transverse momentum transfer ensures that perturbative QCD can be applied. The results are compared to predictions from perturbative QCD models based on the leading logarithmic approximation of the BFKL evolution equation.

Measurements of soft and hard diffractive processes have been performed at the Tevatron collider during the past decade. Diffractive events are studied by means of identification of one or more rapidity gaps and/or a leading antiproton. Here, results are discussed within the Tevatron data and compared to those obtained at the HERA ep collider. The traditional "pomeron" is described within the framework of QCD and the issues discussed include pomeron structure, diffractive cross section factorization, and universality of rapidity gap formation. Exclusive dijet and low-mass state production in double-pomeron exchange processes, including predictions for Higgs production at the LHC from dijet measurements at the Tevatron.

We use a Monte Carlo implementation of recently developped models of double diffractive Higgs production to assess the sensitivity of the LHC experiments. We also discuss a new way to access survival probabilities at the Tevatron.

The production of leading baryons in ep scattering by real and virtual photons has been studied by the H1 and ZEUS Collaborations at the HERA collider. The leading proton spectrometers and the forward neutron calorimeters measure protons and neutrons which carry a large fraction of the incoming proton beam energy and are produced at a small angle with respect to the incoming proton direction. Results are presented on the diffractive structure function measured with a leading proton (0.03 < Q² < 0.6 GeV² and 2 < Q² < 100 GeV²), on dijet production with a leading neutron (Q² < 0.01 GeV² and 2 < Q² < 80 GeV²) at small and large photon virtualities Q², and on photoproduction of D*(2010) mesons with a leading neutron.

A detailed study of vector meson production (ϕ and J/ψ) in e^±p collisions at HERA with the ZEUS and H1 detector has been performed. The cross sections are measured as a function of Q², W and t. In this contribution, the results are summarised, compared to theoretical calculations and the dynamical picture emerging in perturbative QCD is highlighted. The measurement of the hadronic component of the photon light-cone wave function in the exclusive production of di-pions, ep → eπ⁺π^-p is also reported.

The process of deeply virtual Compton scattering will be shortly introduced, and the latest results from measurements at the HERA ep–collider at DESY will be given. In particular, the cross section has been measured with increased statistics at the collider experiments H1 and ZEUS, while HERMES for the first time reports measurements of the t–dependence of the beam–charge asymmetry on hydrogen and of a beam–charge asymmetry on deuterium.

Recent progress in lattice QCD calculations is reviewed with particular emphasis on recent simulations of unquenched QCD.

Recent results of inclusive γγ cross section and exclusive hadron pair productions in tow photon collisions are presented. Data cover LEP energies as well as low energy at B-factory. Various QCD calculations are compared with these results.

An Effective chiral theory of pseudoscalar, vector, and axial-vector mesons is reviewed and applied to study the chiral anomaly and beyond the WZW anomaly. A correction of the low energy theorem of γ → 3π is found, the cross section of π +(A, Z) → ππ + (A, Z) is calculated. The slope of the form factor π⁰γγ* is determined and the crossection of ee⁺ → πγ is calculated. The cross section of ee⁺ → 3π is computed too. Theory agree with data very well.

Bose-Einstein (BEC) and Fermi-Dirac Correlations (FDC) have been studied in hadronic decays from data collected by the LEP and HERA collaborations. Multidimensional analyses of BEC in charged pion pairs have been published by the LEP experiments and the ZEUS experiment at HERA, all showing an elongated shape of the pion emission region. In fully hadronic WW decays at LEP2 energies, BEC between pions stemming from different Ws (inter-W BEC) cannot be excluded a priori. Recent results of inter-W BEC analyses by the LEP collaborations are given.

A search for QCD-instanton-induced events in deep inelastic ep scattering has been performed with the ZEUS detector at the HERA collider. A kinematic range defined by cuts on the photon virtuality, Q² > 120 GeV², and on the Bjorken scaling variable, x > 10^-3, has been investigated. The QCD-instanton induced events were modelled by the Monte Carlo generator QCDINS. A background-independent, conservative 95% confidence level upper limit for the instanton cross section of 26 pb is obtained.

We report calculations of B_K using two flavours of dynamical clover-improved Wilson lattice fermions and look for dependence on the dynamical quark mass at fixed lattice spacing. We see some evidence for dynamical quark effects. In particular B_K decreases as the sea quark masses are reduced towards the up/down quark mass. Our meson masses are quite heavy and a firm prediction of the B_K value is a task for future simulations.

A numerical analysis is made of the chiral transition of N_f = 2 QCD on the lattice. The issue is relevant to understand the mechanism of color confinement. A finite size scaling analysis of the specific heat and of various susceptibilities unambiguously indicates that the transition is first order, although very weak, and weaker as the quark mass is increased. A large volume and small masses are indeed needed to detect the increase with volume of the specific heat and bistability in time histories.

A Linux cluster with 144 dual xeons@2.4 GHz networked with SCI 3-d technology has been integrated at IMSc, Chennai, for numerical simulations in Lattice Gauge Theories. The machine architecture and various benchmark results are given along with a brief description of the ongoing simulations.

The confinement regime in SU(N) LGT is studied via approximate RG decimations that connect short to long distance scales. The decimations turn out to provide both upper and lower bounds on the exact partition function. By interpolation, this leads to a representation of the exact partition function in terms of successive decimations whose effective couplings flows are related to those of the computable approximate decimations. The implications for a derivation of confinement from first principles are discussed.

We present perturbative predictions for the transverse momentum (q_T) distribution of the Higgs boson at the LHC. At small q_T the logarithmically-enhanced terms are resummed to all orders up to next-to-next-to-leading logarithmic accuracy. The resummed component is consistently matched to the next-to-leading order calculation valid at large q_T. The results, which implement the most advanced perturbative information that is available at present for this observable, show a good stability with respect to perturbative QCD uncertainties.

The soft-collinear effective theory has been recently applied to prove novel factorization theorems for many B decay processes. We describe here in some detail the factorization relation for color-supressed nonleptonic B → D^(*)0π⁰ decays and update the phenomenological analysis of these decays.

First full next-to-leading order analytical results in Chiral Perturbation Theory for the charged Kaon K → 3π slope g and decay rates CP-violating asymmetries are presented. We discuss the constraints that a measurement of these asymmetries would impose on the Standard Model calculations of ε′_K and the kind of information it can provide on Im G₈, Im (e²G_E) and higher order weak couplings.

The NA48/2 experiment at CERN has collected the world's largest sample (in excess of 10⁹) of charged kaons to 3π decays, with the main aim of measuring direct CP-violating asymmetries in the Dalitz plot slopes to reach the sensitivity of ~ 10^-4 for both 3π channels. The experiment used a novel technique by employing two simultaneous beams of kaons with opposite charges to exploit cancellations of spurious asymmetries and keep systematics at a very low level.

Important progress made this year, both in theory and in experiment, helped solving the problem of 2σ-deviation from the unitarity of the first row elements in the CKM matrix. Today we have, |V_us|² + |V_ud|² + |V_ub|² - 1 = -0.0008(13), -0.0010(13), or -0.0005(13), depending on whether the q²-dependence of the relevant K_ℓ3 form factor is considered as pole-like, linear or quadratic function, and on the Leutwyler-Roos value of f₊(0) = 0.961(8), whose validity has recently been reinforced by lattice studies. In this talk we summarize the recent developments.

The new results of investigation of and K^±e3 decays performed by NA48 Collaboration are presented. The measured branching fractions are used to extract V_us. The values of Ke3 form-factors and radiative branching ratio are reported. A list of recent NA48 results concerning some rare neutral kaon decays is given.

We measured the branching fractions of six major K_L decay modes, and measured |V_us| = 0.2252 ± 0.0008_KTeV ± 0.0021_ext. We also obtained a new upper limit, B(K_L → π⁰e⁺e^-) < 2.8 × 10^-10 (90% CL), and a improved the CP-violating asymmetry parameter in the K_L → π⁺π^-e⁺e^- decays.

In the first year of physics run, the E949 experiment at Brookhaven National Laboratory has already collected 1.8 × 10^l2 kaons stopping in the target. Additional evidence for the rare charged kaon decay has been observed. Combined with previous results from the E787 experiment, the branching ratio is measured to be .

This note contains a sketch of the goals and design for the KOPIO experiment, which will run at BNL. Designed to measure the branching ratio for the rare decay mode as predicted by the Standard Model, KOPIO will provide a measure of the height of the Unitarity Triangle. The height of the triangle, taken in conjunction with data on the decay mode , completely characterizes CP Violation in the SM.

The rare kaon decay, K_L → π⁰νν, is considered as an ideal process for understanding the origin of CP violation and a critical test for the standard model. The KEK-PS E391a is the first dedicated experiment to search for the decay. It employs two main concepts – a pencil beam and a hermetic photon veto system in a highly evacuated decay region. The experiment started data taking in February 2004 aiming at improving the current experimental limit by three orders of magnitude. The E391a is a pilot experiment for higher sensitivity at the new 50-GeV proton synchrotron in Japan (J-PARC) currently under construction. Using feedback from the E391a, an experiment with a sensitivity better than 10^-13, in which we expect to observe more than 100 events based on the standard model expectation, will be performed. In this report, the experimental principles and current status of data analysis are presented.

We explore the exclusive B⁰ → ρ⁰γ decay to obtain the time-dependent CP asymmetry in b → dγ decay process. We find that the complex RL and RR mass insertion to the squark sector in the MSSM can lead to a large deviation of CP asymmetry from that predicted in the Standard Model.

We review new results on B-hadron lifetime and mixing measurements from the BaBar, Belle, CDF, DØ, and Delphi experiments.

We present new measurements of CP asymmetries in decays recorded by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC between 1999 and 2004. We determine sin2β from decay-time distributions of 7730 signal events in a data sample of approximately . The measured value of sin2β = 0.722±0.040(stat)±0.023(syst) is in agreement with the value expected from the Standard Model. In a separate time-dependent angular analysis of decays we measure cos2β to be positive at 86% CL.

An angular analysis for B decays into two vector mesons gives parameters that are sensitive to new physics. They are the decay amplitudes of the three helicity states, the asymmetry in the triple product, and the CP violating parameters. In this paper, we present measurements of these quantities for the decay of B⁰ → J/ψK*⁰ based on a pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e⁺e^- collider.

We report a measurement of the CP violation parameters in decays. Mixing-induced CP violation involving this transition is studied using a sample of B⁰ → J/ψπ⁰, D*⁺D*^- and D*^±D^∓ decays with a data set accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e⁺e^- collider. CP violation parameters are extracted from a fit to the distributions of time intervals between two B⁰ meson decay vertexes.

We present a new measurement of CP-violation parameters in and decays based on a sample of 275M pairs collected at the ϒ(4S) resonance at the KEKB e⁺e^- collider with the Belle detector. One of the B-mesons is full-reconstructed in one of the decay channels listed and the flavor of the other B-meson is identified with its decay daughters. The CP-violating parameters for each of the decay channels are obtained from the proper-time distribution between the two B decay vertices.

We report on preliminary measurements of time-dependent CP asymmetries in neutral B decays to CP eigenstates with transition amplitudes that are dominated by penguin-type loops. The results are obtained from a data sample of up to 227 million decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. The amplitudes of the effective mixing-induced CP asymmetries, sin2β_eff, are derived from decay-time distributions of events in which one neutral B meson is fully reconstructed in a final state without charm and the other B meson is determined to be either a B⁰ or from its decay products.

CP asymmetries of B → ϕK and B → η^(′)K modes are analyzed in the QCD improved factorization framework. The phenomenological parameters are determined from the global fit for the available B → PP and V P modes (without the subprocess ). The possible deviation of sin(2ϕ₁)_{ϕK⁰, η′Ks} from sin(2ϕ₁)_J/ΨKs and the large branching ratio for B^± → η′K^± can be simultaneously explained in the context of R-parity conserving SUGRA models and R-parity violating SUSY models.

We present preliminary results of several measurements of CP asymmetry in B meson decays obtained with data collected by the BABAR experiment at the PEP-II e⁺e^- collider in the period 1999-2004. Charge asymmetries and time-dependent CP asymmetries are sensitive to the angle γ of the Unitarity Triangle of Cabibbo-Kobayashi-Maskawa quark mixing matrix. Interesting constraints on the Triangle can be derived from a combination of these measurements.

In the ratio of ratios of rates for radiative and semileptonic decays of B and D to K* and ρ mesons the non-computable form factors mostly cancel out. The resulting method for the determination of |V_ub| is largely free of hadronic uncertainties, raising the prospect of a precise determination of |V_ub|.

The present status of the measurement of the moments of the leptonic and hadronic specrum in sernileptonic b decays is reviewed. In particular Belle measures, independently, the electron energy moments for the semileptonic decays of the B⁺ and the B⁰. Particular emphasis is given on the factors affecting experimental and theoretical errors of the Cabibbo-Kobayashi-Masawa matrix element V_cb.

We report studies of semileptonic decays, B → X_cℓν, based on a sample of 88 million events recorded with the BABAR detector. We have measured four moments of the electron energy distribution and four moments of the hadronic mass distribution, each as a function of the minimum electron energy. From these moments we determine the inclusive branching fraction, the CKM matrix element |V_cb|, and other heavy quark parameters, using Heavy Quark Expansions (HQE) to order in the kinetic mass scheme. In addition, we have studied a large sample of exclusive B⁰ → D*^-ℓ⁺ν decays. This sample is used to extract the vector and axial form factors, the normalization and slope of the HQET form factor to determine |V_cb|.

We report preliminary results of |V_ub| from measurements of inclusive and exclusive charmless semileptonic B decays by tagging the accompanying B meson, based on 140fb^-1 of data collected by the Belle detector at the KEKB collider.

We report studies of B → X_uℓν decays, based on a sample of 88 million events recorded with the BABAR detector. From both tagged and untagged events we have isolated inclusive charmless decays in kinematic regions for which the dominant background from B → X_cℓν is reduced by making requirements on different variables: the electron energy E_l, the momentum transfer q², and the hadronic mass m_X. Using theoretical calculations we extrapolate to the total decay rate to determine the CKM matrix element |V_ub|. In addition, we have measured the branching fraction for exclusive semileptonic decays, such as B → π(ρ, ω, η, a₀)ℓν. A high signal purity is achieved by selecting events in which a decay of the second B meson is either fully or partially reconstructed.

We present preliminary measurements of branching fractions and CP-asymmetry parameters in two-and three-body charmless hadronic B decays. The available data sample consists of 227 million decays collected with the BABAR detector at the PEP-II asymmetric-energy e⁺e^- collider at SLAC. We establish the observation of the decays B⁰ → π⁰π⁰ and and constrain the CKM angle α with a full SU(2) isospin analysis in the B → ππ system and with a B⁰ → π⁺π^-π⁰ time-dependent Dalitz plot analysis.

Taking into account the recent measurements of the branching ratios and CP asymmetries in the B → ππ decays by the BABAR and BELLE collaborations, an amplitude analysis based on the isospin symmetry is reported. These data allow to get an independent determination of the CKM unitarity-triangle angle γ. One of the best-fit solutions gives the range γ = (65 ± 5 )°, in excellent agreement with the global CKM fit within the Standard Model. The other parameters from this fit confirm the earlier analyses that the data on B → ππ decays require various topological amplitudes (neglecting the electroweak ones) to be of comparable magnitude with large strong-phase differences.

Using recent determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the measurements of ε_K, |V_ub/V_cb|, and Δm_d, the limit on Δm_s, and the measurement of the CP asymmetry in the B sector through sin 2β. We include in our analysis the direct determination of sin 2α, γ, and sin(2β + γ) from the measurements of new CP-violating quantities. The results and the plots presented here can be also found at the URL http://www.utfit.org.

An up-to-date profile of the CKM matrix is presented, with emphasis on the interpretation of recent CP violation results from the B factories. A global CKM fit provides a determination of the apex of the Unitarity Triangle ( and parameters). A study is performed to probe the dynamics of B decays into ππ, Kπ, ρπ and ρρ within two theoretical frameworks. A model-independent investigation of New Physics effects is given.

We present measurements of time-dependent asymmetries in decays of neutral B mesons to the final states B⁰ → ρ^±π^∓. Measurements are based on a 140 fb^-1 data sample collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider.

We analyze the impact of the forthcoming CP-violating observables in the B_s → K⁺K^- system, combined with the precise measurement of sin 2β, in the extraction of the CKM matrix. Computing the penguin parameters (r, θ) within QCD factorization yields a precise determination of , reflected by a weak dependence on θ, which is shown to be a second order effect. Using the SU(3)-flavour symmetry argument and the current B-factories data provided by the B_d → π⁺π^- modes, we complement the B_s → K⁺K^- CP-violating observables in a variety of ways, in particular we find that S_KK > 0. Finally, we investigate systematically the SU(3)-symmetry breaking factor within QCD factorization. LMU 12/04

We report evidence for direct CP violation in the decay B⁰ → K⁺π^- and the first observation of the decay B⁰ → π⁰π⁰ with 253 fb^-1 of data collected with the Belle detector at the KEKB e⁺e^- collider. We also search for CP violation in the decays B⁺ → K⁺π⁰ and B⁺ → π⁺π⁰.

Relative branching fractions of B_{d, s} → h⁺h′^- decays (where h, h′ = K or π) and direct CP asymmetry in B_d → K⁺π^- have been measured with 180 pb^- of data collected by the CDFII detector at the Tevatron collider. This includes the first BR measurement of a charmless B_s →PP decay (B_s → K⁺K^-).

The ATLAS silicon Pixel Detector will be the innermost tracking device of the ATLAS experiment at the Large Hadron Collider at CERN and will contribute significantly to the ATLAS track and vertex reconstruction. The position of the Pixel Detector near the interaction point requires excellent radiation hardness that has been demonstrated in extensive studies, including beam test measurements during and after irradiation up to Φ = 2.2 × 10¹⁵ protons cm^-2.

As a very large number of sensors, electronics, integrated circuits and substructures are to be produced in CMS, the collaboration has developed a very elaborate and detailed quality insurance program. All the aspects of the production have been studied and carefully treated in order to optimize the quality and robustness of the detectors and the electronics that should survive ten years of operation of LHC. A description of the methods used in the production scheme is given together with preliminary results of beam tests performed on tracker end-cap substructures with high energy muon and pion beams.

The ATLAS liquid argon calorimeter system is an electromagnetic barrel calorimeter and two electro-magnetic, hadronic and forward, endcap calorimeters. This system has finished its construction. It is now in the integration and commissioning phase at CERN. The barrel electromagnetic calorimeter has performed its first complete cool down test. The two endcap calorimeters which contain, in each cryostat, an electromagnetic wheel, two hadronic wheels and three forward wheels, are finalized and prepared for cold tests. A complete status on the construction and integration phases as well as the on going commissioning is presented including quality check results (mechanics and connectivity). Several modules of these calorimeters were beam tested in stand-alone mode as well as in combined mode with electrons, photons and pions of various energies. A selection of the results is presented including energy and position resolution, response uniformity, time measurements, pion and muon responses, comparison to simulations … A status of expected general performances is given.

Muons are an unmistakable signature of most of the LHC physics is designed to explore. The ability to trigger on and reconstruct muons at highest luminorsities is central to the concept of CMS. CMS is characterized by simplicity of design, with one magnet whose solenoideal field facilitates precision racking in the central barrel region and triggering on muons through their bending in the tharnverse and side views. The CMS muon system has three purpose: muon identification, muon trigger and nuon momentum measurement.

The main design feature of BESIII is presented, the current status and the progress of various systems is described.

We report our experience commissioning and operating the CDF Run II silicon detector during the first three years of Run II. As the luminosity delivered by the Tevatron increases, measurable effects of radiation damage have been observed. Studies of charge collection and noise versus applied bias voltage at several different integrated luminosities are presented. These results and their impact on the expected lifetime of the detector are discussed.

Chemically Vapour Deposited diamond particle detectors have been under development as radiation tolerant alternatives to silicon detectors for the past 15 years. Here I report on recent results of tracker and pixel detector prototypes as well as the emerging field of diamond beam loss monitors for high intensity particle accelerators.

The on-detector optical link of the ATLAS pixel detector contains radiation-hard receiver chips to decode bi-phase marked signals received on PIN arrays and data transmitter chips to drive VCSEL arrays. The components are mounted on hybrid boards (opto-boards). We present results from the opto-boards and from irradiation studies with 24 GeV protons up to 33 Mrad (1.2 × 10¹⁵ p/cm²).

The CMS Tile-fiber Hadronic Calorimeter is read out by multi-channel hybrid photodiodes. At almost 10,000 channels, this is the largest application of this new technology in one integrated detector system. A 5 year development project has produced custom tubes that achieve high-rate, low-crosstalk operation in a 4 Tesla magnetic field and remain stable in a high radiation environment for the 10-yr lifetime of the CMS experiment. The specifications are rigorous and are maintained by a set of automated Quality Assurance stations and a web-accessible database.

We report upon the design, construction, and operation experience of a small scintillator tile hadronic calorimeter prototype. Scintillator tiles are read out via wavelength shifting fibers which guide the light to novel photodetectors, the Silicon Photomultipliers. The experience gained with the prototype is being used now for the construction of a calorimeter with 8000 channels. This calorimeter will be a prototype for a future Linear Collider detector. It will be also used to prove experimentally the Particle Flow method for jet energy measurements.

The challenging physics program at the International Linear Collider (ILC) poses stringent requirements on the performance of its tracking system. A large volume time projection chamber (TPC) is considered a good candidate for such a tracker. Whereas conventional TPCs used a wired based gas amplification system, a future TPC is likely to make use of micro pattern gas detectors as e. g. gas electron multipliers (GEMs) for gas amplification. This talk gives an overview over recent achievements from the R&D activities to build a TPC with a GEM based gas amplification system. This includes charge transfer studies through multiple GEM structures, field cage design and spatial resolution measurements in high magnetic fields.

Since one or two years, Micromegas detectors have broken records in many respects: time and spatial resolution, single electron detection, low ion backflow, high rate capabilities, low energy threshold and low-noise detection. The recent achievements in these directions, obtained in the COMPASS, NA48 (KABES), and CAST experiments, and in R&Ds for the Linear Collider TPC and for low-energy neutrino detection, are presented. The reasons for such a success, inherent to basic properties of Micromegas, are explained.

Starting from the very beginning of their operation the efficiency of the RPC chambers in the BaBar Instrumented Flux Return (IFR) has suffered serious degradation. After intensive investigation, various remediation efforts had been carried out, but without success. As a result the BaBar collaboration decided to replace the dying barrel RFC chambers about two years ago. To study the feasibility of using the Limited Streamer Tube (LST) as the replacement of RPC we carried out an R&D program that has resulted in BaBar's deciding to replace the barrel RPC's with LST's. In this report we summarize the major detector R&D results, and leave other issues of the IFR system upgrade to the future publications.